Shrub rose plant named ‘KORfloci10’

ABSTRACT

A new and distinct variety of rose with long lasting, novel light yellow flowers, and attractive foliage with good disease resistance. It exhibits compact growth with abundant flowers. The new variety propagates well from cuttings and by grafting. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.

Latin name of genus and species: The botanical classification of the new rose plant is Rosa hybrida.

Variety denomination: The denomination of the new variety is ‘KORfloci10’.

BACKGROUND OF THE INVENTION

The new variety of rose plant of the present invention originated from a controlled crossing in a breeding program of two distinct parents during the summer of 2000. The crossing was between an un-named seedling from the same breeder and ‘NOAlesa’.

The resulting seeds were planted during the following winter. The resulting seedlings were evaluated and exhibited distinctive physical and biological characteristics. The new rose plant was selected as a single plant from the seedling beds due to its superior characteristics and asexually propagated for further evaluation. This new and distinctive rose variety is named ‘KORfloci10’.

SUMMARY OF THE INVENTION

The new rose plant may be distinguished from its seed parent, an un-named seedling, by the following combination of characteristics:

-   -   1. The flowers of ‘KORfloci10’ are light yellow, while the         flowers of the seed parent are apricot, and     -   2. the growth habit of ‘KORfloci10’ is compact, while the growth         habit of the seed parent is vigorous.

The new rose plant may be distinguished from its pollen parent, ‘NOAlesa’ by the following combination of characteristics:

-   -   1. The flowers of ‘KORfloci10’ are light yellow, while the         flowers of the seed parent are yellow,     -   2. the growth habit of ‘KORfloci10’ is compact, while the growth         habit of the seed parent is upright.

The objective of the hybridization was to create a new and distinct rose plant with unique qualities, such as:

-   -   1. Compact and uniform growth and flowering;     -   2. Abundant attractive, recurrent flowers;     -   3. Attractive and abundant foliage; and     -   4. Resistance to diseases encountered in landscapes and gardens.

This combination of qualities is not present in prior rose cultivars. These objectives have been substantially achieved and in that distinguish ‘KORfloci10’ from all other varieties of which we are aware.

As part of a rose development program, Tim-Hermann Kordes germinated seeds from the aforementioned hybridization and conducted evaluations and observations on the resulting seedlings in a controlled environment in Offenseth-Sparrieshoop, Germany. The resulting seedlings exhibited distinctive physical and biological characteristics. The new rose plant ‘KORfloci10’ was selected in May, 2001 from the seedling beds to be asexually propagated for further evaluation. The first asexual propagation of ‘KORfloci10’ was done by budding to seedling understocks in July, 2001 at the inventor's nursery in Offenseth-Sparrieshoop, Germany.

This initial and other subsequent propagations conducted in controlled environments demonstrate that ‘KORfloci10’ reproduces true to type in successive generations of asexual reproduction.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying color illustration shows as true as is reasonably possible to obtain in color photographs of this type, the typical characteristics of the buds, flowers, leaves, and stems of ‘KORfloci10’. Specifically illustrated is: a flower bud, partially opened bloom, open bloom, floral parts, sepals, juvenile foliage, stem exhibiting thorns, and leaves.

DETAILED BOTANICAL DESCRIPTION

The following is a description of ‘KORfloci10’, as observed growing in September, 2007 in a nursery in Jackson County, Oregon on plants of four years of age. Color references are made using The Royal Horticultural Society (London, England) Colour Chart, 2001 except where common terms of color are used.

For a comparison, several physical characteristics of the rose variety ‘KORquelda’, a rose variety from the same inventor described and illustrated in U.S. Plant Pat. No. 17,048 and issued on Aug. 22, 2006 are compared to ‘KORfloci10’ in Chart 1.

CHART 1 Characteristic ‘KORfloci10’ ‘KORquelda’ Petal count Double (20-25) Very double (40) Overall height 70-75 cm 100-125 cm Flowers per stem 4-7 blooms per stem 3-6 blooms per stem

-   Parents:     -   -   Seed parent.—An un-named seedling.         -   Pollen parent.—‘NOAlesa’. -   Classification:     -   -   Botanical classification.—Rosa hybrida, ‘KORfloci10’.         -   Commercial classification.—Shrub rose.

FLOWER AND FLOWER BUD

-   Blooming habit: Recurrent. -   Flower bud:     -   -   Size.—Upon opening, 32-35 mm in length from base of             receptacle to end of bud and 25-27 mm diameter at its widest             point.         -   Bud form.—Long and pointed ovoid.         -   Bud color.—As sepals first unfold, bud color on the marginal             zone of petal is Yellow Group 8B. Bud color on middle zone             of petal is Yellow Group 8C. When ¼ open, the upper surface             of petals is Yellow Group 5D, and the lower surface is             Yellow Group 4D with intonations of Orange-Red Group 35B.         -   Sepals.—Size: Average 24-28 mm long×8-9 mm wide. Shape:             Sepals generally subulate. Sepal apex is generally cirrose.             Weak foliaceous appendages on three of the five sepals. Base             is flat at union with receptacle. Quantity: Five. Margins:             With stipitate glands. Surface texture: Inner side:             Pubescent. Covered in fine hairs. Outer surface: Smooth. No             hairs observed. Color: Upper surface: Yellow-Green Group             146C with intonations of Greyed-Purple 184C. Lower surface:             Yellow-Green Group 144A.         -   Receptacle.—Surface: Smooth. Color: Yellow-Green Group 144A.             Shape: Funnel shaped. Size: 5-6 mm (h)×7-8 mm (w).         -   Peduncle.—Surface: Smooth. Length: 18-24 mm average length.             Diameter: 1-1½ mm average diameter. Color: Yellow-Green             Group 144B.         -   Strength.—Strong.         -   Borne.—Multiple flower buds per stem, generally 4 to 7. -   Flower bloom:     -   -   Fragrance.—Light.         -   Duration.—On the plant 3-6 days. Long lasting. Senesced             petals drop away cleanly.         -   Size.—Medium flowered garden rose. When open, the average             flower diameter is 65-75 mm and the average flower height is             30 mm.         -   Form.—Shape of flower when viewed from the side: Upon             opening, upper part: Flat. Upon opening, lower part:             Flattened convex. Open flower, upper part: Flattened convex.             Open flower, lower part: Concave. -   Color:     -   -   Upon opening, petals.—Outermost petals: Outer Side: Marginal             zone: Yellow Group 4D. Middle zone: Yellow Group 4C. Inner             Side: Marginal zone: Yellow Group 4C. Middle zone: Yellow             Group 4B. Innermost petals: Outer Side: Yellow Group 4B.             Inner Side: Yellow Group 4A.         -   Upon opening, basal petal spots.—Basal petal spot, outermost             petals: Outer Side: Yellow Group 4B. Inner Side: Yellow             Group 4A. Basal petal spot, innermost petals: Outer Side:             Yellow Group 4A. Inner Side: Yellow Group 5A.         -   After opening, petals.—Outermost petals: Outer Side: Yellow             Group 2D. Inner Side: Yellow Group 2D. Innermost petals:             Outer Side: Yellow Group 2D. Inner Side: Yellow Group 2D.         -   After opening, basal petal spots.—Basal petal spot,             outermost petals: Outer Side: Yellow Group 4B. Inner Side:             Yellow Group 4A. Basal petal spot, innermost petals: Outer             Side: Yellow Group 4B. Inner Side: Yellow Group 4A.             Variegations: None. -   General tonality: On open flower, Yellow Group 2C. No change in the     general tonality at the end of the 5th day. Afterwards, general     tonality is Yellow Group 2D. -   Petals:     -   -   Petal count.—Double. Approximately 20-25 petals under normal             conditions.         -   Petal reflex.—Petals reflex somewhat.         -   Petal edge.—Slightly ruffled.         -   Petal shape.—Deltoid. Apex shape is round. Shape of base is             rounded.         -   Petal size.—30-32 mm long; 35-37 mm wide.         -   Thickness.—Average.         -   Petal arrangement.—Generally in a regular pattern with             overlapping edges. -   Petaloids: Present.     -   -   Petaloid count.—Average of 4-6 per flower.         -   Petaloid edge.—Smooth.         -   Petaloid texture.—Smooth.         -   Petaloid shape.—Obovate. Base: acute. Apex: rounded.         -   Petaloid size.—Petaloids are 10-12 mm long and 6-10 mm wide.         -   Petaloid color.—Color of inner side is Yellow Group 4A.             Color of outer side is Yellow Group 4B. -   Reproductive organs:     -   -   Pistils.—Approximately 60-70 present. Stigmas: Location:             Inferior in position to anthers. Color: Yellow-Green Group             1B. Length: 6-8 mm long. Color: Yellow-Green Group 154D.         -   Stamens.—Abundant. Approximately 120-140 on average and             regularly arranged. Anthers: Size: 2 mm long. Color:             Margins: Yellow-Orange Group 17A. Middle: Yellow-Green Group             13C. Pollen: Absent. Filaments: Color: Yellow Group 13B.             Length: 6-9 mm.

THE PLANT

-   -   -   Plant growth.—Moderate vigor. Compact habit. When grown as a             budded nursery plant the average plant height is 70-75 cm             and the average plant width is 60-65 cm.         -   Stems.—Stem color: Young wood: Yellow-Green Group 144A.             Older wood: Yellow-Green Group 146B. Stem surface: Young             wood: Smooth. Older wood: Smooth.         -   Prickles.—Present. Incidence: 6-8 per 10 cm of stem. Size:             Average length: 9-10 mm. Color: Immature prickles: Base:             Greyed-Purple Group 185B. Apex: Greyed-Yellow Group 160A.             Mature prickles: Base: Greyed-Yellow Group 161B. Apex:             Greyed-Yellow Group 160A. Senescing to Greyed-Orange Group             164C. Shape: Deeply concave to concave. Anthocyanin: Color             on base and middle zone of prickle: Greyed-Purple Group             185A. Color on apex of prickle: Greyed-Yellow Group 160A.         -   Leaves and leaflets.—Normally 5-7 leaflets on normal leaves             in middle of the stem. Leaf size: 90-100 mm (l)×70-80 mm             (w). Quantity: Abundant. Texture: Upper side of leaflet:             Glossy and smooth. Under side of leaflet: Matte and smooth.             Color, mature foliage: Upper Leaf Surface: Green Group 139A.             Lower Leaf Surface: Yellow-Green Group 147B. Color, juvenile             foliage: Upper Leaf Surface: Green Group 139A. Lower Leaf             Surface: Yellow-Green Group 147B. Anthocyanin intonation:             Present. Location: Intonations present on juvenile leaf             margins and upper and lower sides of leaf leaf margins and             upper and lower sides of leaf surfaces. Color: Greyed-Purple             Group 183A.         -   Stipules.—Size: 16-17 mm long. 8-9 mm between the tips of             the stipule. Main body of stipule 6-7 mm in width. Shape:             Elongated and winged. Stipule color: Margins: Green Group             137B. Center: Yellow-Green Group 144B. Anthocyanin: Slight             intonations of Greyed-Purple Group 184B. Presence of             stipitate glands: Present on margins. Margins: Serrated.             With stipitate glands.         -   Petiole.—Length: 6-10 mm. Diameter: 1-1½ mm. Petiole color:             Green Group 137C. Anthocyanin present on juvenile tissue.             Color: Greyed-Purple Group 184B. Underneath: A few small             prickles underneath. Stipitate glands: Limited numbers of             stipitate glands on margins.         -   Rachis.—Length: 12-14 mm. Diameter: 1-1½ mm. Color: Green             Group 137C. Anthocyanin present on juvenile tissue,             specifically noted on the margins of rachis: Greyed-Purple             Group 184B. Margins: With limited numbers of stipitate             glands. Yellow-Green Group 154B. Stipitate glands: Limited             numbers of stipitate glands on margins.         -   Leaflets.—Size: Average size of the terminal leaflet is             50-55 mm (l)×30-35 mm (w). Shape: Ovate. Base: Ovate. Apex:             Acute. Margins: Serrated. Texture: Leathery and glossy.

-   Hips/seed formation: Observed. Size: 10 mm (l)×15 mm (w). Color:     Green Group 143C.

-   Winter hardiness: To date, the variety has been grown successfully     in Zone 5.

-   Disease resistance: Very good resistance to powdery mildew, rust,     Black spot disease under normal growing conditions. 

1. A new and distinct variety of rose plant characterized by the following combination of characteristics: (a) Forms attractive, long lasting light yellow flowers; (b) Exhibits compact growth habit; (c) Propagates well using traditional methods, and; (d) Exhibits very good resistance to disease under normal growing conditions, substantially as herein illustrated and described. 